<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab区域 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormref"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="beforeTableave"
          @tab-click="tabclicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateprops"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTabDate"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabDate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"> </el-input
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip"></div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"> </quill-editor>
            <el-button type="primary" class="btn" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览 -->
    <el-dialog title="预览" :visible.sync="previewVisible" width="50%">
      <img :src="PreviewPath" alt="" class="previewimg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'

export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: [],
      },
      addFormrules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      cateprops: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      catelist: [],
      manyTabDate: [],
      onlyTabDate: [],
      PreviewPath: '',
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      previewVisible: false,
    }
  },
  created() {
    this.getcatelist()
  },
  methods: {
    async getcatelist() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据')
      }
      this.catelist = res.data
      // console.log(this.catelist)
    },
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTableave(activeName, oldactiveName) {
      if (oldactiveName == '0' && this.addForm.goods_cat.length != 3) {
        this.$message.error('请先选择分类')
        return false
      }
    },
    async tabclicked() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateID}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        if (res.meta.status != 200) return this.$message.error('获取失败')

        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
        })
        this.manyTabDate = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateID}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        if (res.meta.status != 200) return this.$message.error('获取失败')
        console.log(res.data)
        this.onlyTabDate = res.data
      }
    },
    handlePreview(file) {
      this.PreviewPath = file.response.data.url
      this.previewVisible = true
    },
    handleRemove(file) {
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex((x) => x.pic == filePath)
      this.addForm.pics.splice(i, 1)
    },
    //监听图片上传成功的事件
    handleSuccess(response) {
      console.log(response)
      const picInfo = {
        pic: response.data.tmp_path,
      }
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    add() {
      this.$refs.addFormref.validate(async (valid) => {
        if (!valid) {
          return this.$message.error('听填写必要的表单项')
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        this.manyTabDate.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' '),
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTabDate.forEach((item) => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        console.log(form)

        const { data: res } = await this.$http.post('goods', form)
        if(res.meta.status !=201) return this.$message.error('添加失败')
        this.$router.push('/goods')
     })
    },
  },
  computed: {
    cateID() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0;
}
.previewimg {
  width: 100%;
}
.btn {
  margin-top: 15px;
}
</style>